Health Based Limits for Methomyl

Standard

Description

Level

Lifetime health-based limit, non-cancer risk

Concentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for a lifetime of exposure. The Lifetime health-based limit (or Health Advisory, HA) is based on exposure for a a 70-kg adult consuming 2 liters of water per day. Source: U.S. Environmental Protection Agency.

200 ppb

Health-Based Screening Level

A benchmark concentration of contaminants in water that may be of potential concern for human health, if exceeded. For noncarcinogens, the HBSL represents the contaminant concentration in drinking water that is not expected to cause any adverse effects over a lifetime of exposure. For carcinogens, the HBSL range represents the contaminant concentration in drinking water that corresponds to an excess estimated lifetime cancer risk of 1 chance in 1 million to 1 chance in 10 thousand. Source: U.S. Geological Survey.

200 ppb

Children's health-based limit for 1-day exposure

Concentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for up to one day of exposure. The One-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency.

300 ppb

Children's health-based limit for 10-day exposure

Concentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic effects for up to ten days of exposure. The Ten-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency.

300 ppb

Drinking Water Equivalent Level

A lifetime exposure concentration protective of adverse, noncarcinogenic health effects, that assumes all of the exposure to a contaminant is from drinking water. Source: U.S. Environmental Protection Agency.

900 ppb

Testing Summary for Methomyl

Are tests routinely required for Methomyl by federal law?

No

Water suppliers reporting tests for Methomyl (2004-2009):

11,586 of 47,576

Average testing rate for water supplier reporting tests (2004-2009):

0.4 per year

Allergies/immunotoxicity

Type of concern:

Reference:

Known human immune system toxicant or allergen

National Library of Medicine HazMap

Neurotoxicity

Type of concern:

Reference:

Strong evidence of human neurotoxicity

Chemicals known to be neurotoxic to humans

Endocrine disruption

Type of concern:

Reference:

Human disruptor - moderate evidence

European Commission on Endocrine Disruption

Limited evidence of endocrine disruption

Japanese National Institute of Health Sciences, 1997

endocrine - weight of evidence unknown/unassessed/unreview: published lit review or major tox study

Illinois EPA Chemicals Associated with Endocrine System

endocrine - weight of evidence unknown/unassessed/unreview: published lit review or major tox study

Our Stolen Future Endocrine Disruptors

Developmental/reproductive toxicity

Type of concern:

Reference:

Human nervous system toxicant - moderate evidence

Chemicals known to be neurotoxic to humans

Occupational hazards

Type of concern:

Reference:

Allowed workplace exposures restricted to very low doses

European Union - Classification & Labelling

Allowed workplace exposures restricted to low doses

RTECS®- TLV/BEI,2007

Organ system toxicity (non-reproductive)

Type of concern:

Reference:

Classified as very toxic or harmful

European Union - Classification & Labelling

One or more animal studies show classified as toxic effects at moderate doses (low dose studies may be unavailable for this ingredient)

National Library of Medicine HazMap

Cancer

Type of concern:

Reference:

One or more in vitro tests on mammalian cells show positive mutation results

RTECS®- Environmental and Molecular Mutagenesis 1994

One or more in vitro tests on mammalian cells show positive mutation results

RTECS®- Environmental Research 1987

One or more in vitro tests on mammalian cells show positive mutation results

RTECS®- Food and Chemical Toxicology 2007

One or more in vitro tests non-mammalian cells show positive mutation results